The EBYTE E30T-433T20S(125℃) is an industrial-grade, SMD-type 433MHz UART half-duplex transparent transmission module operating at 425 to 450.5MHz with 20dBm (100mW) power, featuring integrated Ebyte Forward Error Correction (FEC) and RSSI support, specifically engineered to deliver reliable wireless communication up to 2.5km in extreme high-temperature environments ranging from -40 to +125 degrees Celsius.
| Product Specification Parameter | E30T-433T20S(125 degrees Celsius) |
|---|---|
| Operating Frequency Range | 425 to 450.5 MHz (Default: 433 MHz) |
| Maximum Transmit Power | 20 dBm (approximately 100 mW) |
| Reliable Wireless Distance | 2.5 km (Line-of-Sight, open air) |
| Operating Temperature Range | -40 to +125 degrees Celsius (Engineered for extreme heat resilience) |
| Communication Interface | UART Serial Interface (TTL logic levels) |
| Transmission Mode | Half-Duplex Transparent Transmission, Integrated Transceiver |
| Advanced Embedded Features | Ebyte FEC (Forward Error Correction), RSSI Signal Strength Indication |
| Antenna Connectivity | IPEX Connector |
| Physical Package Type | SMD (Surface Mount Device) |
| Module Physical Size | 17 * 30 mm |
| Product Net Weight | 2.4 grams plus or minus 0.1 grams |
| Main parameter | Performance | Remark |
|---|---|---|
| Reference distance | 3500m | Clear and open environment, antenna gain 3.5dBi, antenna height 2.5m, air rate 1kbps |
| Subcontracting | 58 Byte | The maximum capacity of a single package, it will be automatically sub-packaged when it exceeds. |
| Cache capacity | 128 Byte | - |
| Modulation | GFSK | - |
| Packaging method | SMD | - |
| Interface | 1.27mm | - |
| Communication Interface | TTL | TL level |
| Dimensions | 16 * 26mm | - |
| Antenna interface | IPEX/stamp hole | Equivalent impedance is about 50 ohms |
| Main parameter | Min. | Typ. | Max. | Unit | Remark |
|---|---|---|---|---|---|
| Operating Voltage | 2.7 | 5.0 | 5.5 | V | ≥3.3V can guarantee output power |
| Working frequency | 410 | - | 450 | MHz | Factory default 433MHz, support ISM frequency band |
| Communication Level | - | 3.3 | - | V | Risk of burnout with 5V TTL |
| Emission current | - | 120 | - | mA | Instantaneous power consumption |
| Receive current | - | 20 | - | mA | - |
| Sleep current | - | 20 | - | uA | software shutdown |
| Maximum transmit power | 19.4 | 20 | 20.5 | dBm | - |
| Receive sensitivity | -120 | -121 | -122 | dBm | air rate is 1kbps |
| Air rate | 1k | 1 | 25k | bps | User programming control |
Practical Application Scenarios
1. Industrial Kiln and Furnace Telemetry Monitoring
In heavy metallurgical, ceramics, or glass manufacturing plants, sensors monitoring internal kiln temperature or conveyor statuses are subjected to extreme heat. Using the E30T-433T20S(125℃) embedded within high-temperature sensor nodes allows continuous UART transparent data transmission of thermal telemetry. The wide operating range of -40 to +125 degrees Celsius ensures that the onboard transceiver components do not suffer from frequency drift or component degradation under high-ambient thermal stress, bypassing the need for expensive external cooling.
2. Smart Petroleum and Oil Wellhead Monitoring
In deserts or remote oilfields, surface extraction wellheads and pipeline junctions experience intense solar radiation and high ambient friction temperatures. The E30T-433T20S(125℃) serves as the primary serial telemetry link. It transmits flow rates, pressure levels, and temperature data over a line-of-sight range of up to 2.5km to a central RTU gateway. The integrated Forward Error Correction (FEC) algorithms prevent data packet corruption caused by severe industrial noise or atmospheric interference.
3. Smart Power Grid Overhead Line Temperature Monitoring
Power distribution lines carry high-voltage currents that generate substantial heat during peak demand, especially in hot summer months. Monitoring line sag and clamp temperatures requires robust wireless modules mounted directly on the conductor lines. The SMD-packaged E30T-433T20S(125℃), weighing only 2.4 grams (plus or minus 0.1 grams), is easily integrated into lightweight solar-powered line sensors. Its high-temperature resistance allows it to operate directly alongside hot conductors without thermal failure, utilizing the 433MHz Sub-GHz band to penetrate foliage and transmit to towers.
FAQ Section
1. How does the E30T-433T20S(125C) achieve stable frequency performance at temperatures up to 125 degrees Celsius?
Industrial-grade wireless modules often suffer from crystal oscillator frequency drift when exposed to extreme thermal stress, leading to dropped packets and communication failures. The E30T-433T20S(125C) is designed with high-grade, temperature-compensated active crystal components and premium silicon passives rated for continuous operation from -40 to +125 degrees Celsius. This specialized hardware layout guarantees minimal frequency deviation across the entire 425 to 450.5MHz operating band.
2. What is the benefit of Ebyte's built-in Forward Error Correction (FEC) algorithm in this module?
The embedded FEC (Forward Error Correction) algorithm automatically adds redundant error-correcting code blocks to the wireless transmission packets. If a data packet experiences instantaneous electromagnetic interference during transmission over its 2.5km range, the receiving module's physical layer can automatically identify and correct the corrupted bits without requiring a retransmission. This drastically improves the link budget, reduces latency in noisy industrial environments, and ensures reliable UART transparent transmission.
3. Can this module be surface-mounted directly, and what are its antenna connection options?
Yes, the E30T-433T20S(125C) features an ultra-compact SMD (Surface Mount Device) stamp-hole package measuring only 17 * 30 mm, which is ideal for high-density automated pick-and-place assembly. For antenna integration, the module provides an IPEX connector interface, allowing engineers to connect external high-gain rubber ducky or magnetic mount antennas via standard RF coaxial pigtails for optimal 433MHz transmission.
4. Is the UART serial interface compatible with 3.3V and 5V Microcontrollers (MCUs)?
The UART serial interface on this module operates at standard TTL logic levels (typically 3.3V). When interfacing with 3.3V MCUs, it can be connected directly to the RX/TX pins. For integration with 5V MCUs, we highly recommend using a simple bi-directional logic level converter on the RX and TX lines to prevent over-voltage damage and ensure long-term reliability under high-temperature conditions.
